When I insert my shellholders in my Lee Breech Lock Challenger Single Stage Press the mouth of the shellholder is facing to the right as is my handle. Can the shellholder be placed on the ram so that the mouth is on the left instead. I have read where it is the preferred method to place it to the right. But i would rather not reach through the press and just place the case in from the left. If this can be done, can you please tell me how?